19、函数的类型

1.函数也是有类型的

func (参数列表类型的数据类型)(返回值列表的数据类型)

/**
 * @author ly (个人博客:https://www.cnblogs.com/qbbit)
 * @date 2023/5/11  22:49
 * @tags 喜欢就去努力的争取
 */
package main

import "fmt"

func main() {

	a := 10
	fmt.Printf("%T\n", a)

	b := [4]int{1, 2, 3, 4}
	fmt.Printf("%T\n", b)

	c := []string{"Python", "Java", "GO"}
	fmt.Printf("%T\n", c)

	d := make(map[int]string)
	d[1] = "zs"
	fmt.Printf("%T\n", d)

	// 函数的数据类型
	fmt.Printf("%T\n", funType)

	fmt.Printf("%T\n", funType2)

	fmt.Printf("%T\n", funType3)

	fmt.Printf("%T\n", funType4)
}

func funType() {

}

func funType2(num int) string {
	return "ly"
}

func funType3(s string) string {
	return "ly"
}

func funType4(a, b, c string, d map[int]string, e []int, f [2]string) (m1 map[string][]int, s1 string, arr [4]int) {
	arr1 := [4]int{1, 2, 3, 4}
	return nil, "", arr1
}